United's offer values Fellaini at less than the £23.5m release clause that expired in July but sources have told Goal that the Old Trafford club have set a £20m ceiling for the 25-year-old and that there is no room for manoeuvre.

Everton manager Roberto Martinez has publicly stated his desire to keep both players at Goodison Park but the Spaniard wants the situation resolved quickly so that he can re-invest in the squad before the close of the transfer window.